Speaker box



FIG. 1 is a perspective view of the front, top and right side of a speaker box showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The broken lines showing of the speaker box is included for the purpose of illustrating portions of the speaker box and forms no part of the claimed design. 

CLAIM The ornamental design for a speaker box, as shown and described. 